Attachment for air-escape valves



oct, 29, 1929. GROSBERGEAL A1,733,871@

ATTACHMENT FOR AIR ESCAPE VALVES Filed nec. 28. 1,92%

. Inventor Wz'Z/Z'WW 61rd Sey,

@gary e Su pre 77a 777,L

Patented Oct. 29,- 1929 UWE` rassen? ATTACHMENT Fon Are-inserire Application ined December 28, i927.. 'seriali No. '24'a13a-` The present invention relates to an attachment to the well known air escape valve such is used on steam heating radiators and the 5 The prime object of the invention resides in the provision of an attachment which will cause the ordinary air escape valve to function as a vacuum valve for the purpose of maintaining the heat in the radiator for a lo longer period of time and to allow the radiator to heat up in a shorter period of time.

A further very important object of the invention resides in the provision of an attachment of this nature which is exceedingly simple in its construction, may be manufactured at an extremely low cost, is easy to mount on the valve, is strong and durable, is compact and convenient, and is thoroughly efficient and reliable in its operation.

lNith the above and numerous other objects in view as will appear as the description proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be Z5 hereinafter' more fully described and claimed.

In the drawing, rIhe ligure is a sectional view through the attachment showing the same on a conventional form of air escape valve.

Referring to the drawing in detail it will be seen that the letter V denotes generally a conventional form of air escape valve now commonly used on steam heating radiators.

v rlhis valve V comprises a body 5 with a threaded nipple 6 projecting laterally therefrom for engagement in the steam heating radiator in a well known manner. There also projects from the body 5 an externally threaded nipple 7 which rises therefrom and 4d usually threadedly receives an apertured cap. Our attachment takes the place of this cap. Referring now in detail to the attachment it will be seen that the numeral 8 denotes a tubular body having an annular flange pro- 155 jecting outwardly from one end as at 9 and beveled as at 10 to fit a like beveled portion on the end of the neck 7. A nut 11 threadedly engages the neck 7 and has a shoulder 12 to engage the flange 9 so that said flange may be held in tight engagement with the end of vsince in actual practice it attains the features theneck.' A cup-shaped member 14 has pro- ]ject'ingfroni its' bottom a nipple 15 threadedly engaged in the otherendof the body 8 andl formed with a bore 16 leading into the interir of the cup-shaped member.` The inner end ofthisnipple V15. rises slightly from the bottoml 'of the cup,-sl'iapedy member interiorly thereof as at' 17'. A cap 18 is threadedly engaged on the upper end of the cup-shaped member to close said upper end. vIn the lower corner of the cup shaped member there is provided a diagonal escape opening 19. A disk valve 2O has an elongated stem 21 Vextending from the center thereof into the bore 16 and this disk valve 20 rests on the proc5 jection 17 and closes all communication between the bore 16 and the interior of the cup shaped member 14 normally by gravitation and by vacuum created in the radiator.

From the above detailed description it will 7.0 be seen lthat when the attachment is first placed on the valve V' any air escaping from the valve will lift the disk valve 20 so that the air may'escape into the cup shaped member 14 and out through the opening 19. How- V75 ever, as soon as the steam pressure goes down, atmospheric pressure through the opening 19 and in the cup shaped member 14 will tightly seat the valve 20 on the projection 17 vand close all communication between .the cup So shaped member 14 and the bore 16 so that a vacuum will be formed in the radiator thereby causing the radiator to retain its heat for a greater length of time.. It will also be seen that the radiator will heat up more quickly because of the vacuum therein tending tov more quickly receive the steam as the pressure rises.

It is thought that the construction, utility, and advantages of this invention will be :learly understood without a more detailed description thereof.

The present embodiment of the invention has been disclosed merely by way of example eov of advantage enumerated as desirable in the statement of the invention and the above description. It will be apparent that changes in the details of construction, and in the com- A binaton and arrangement of parts may be :rec

tures.

resorted to Without departing from the spiritv orv scope of the invention as hereinafter claimed,or sacricin any of its advantages.

Having thus descri` ed our invention, what we claim as ne7 is: Y Y Y Y An attachment for an air escape valve `'comprising a tubular body, means for attaching oneend of the tubular body on the outlet of an air valve, a cup-shaped member having a vnipple projecting from the bottomv thereof outwardly thereof and threadedly engaged in the other end of the tubular body and rovided with a bore, said nipple projecting into the tubular body, a disk valve restable on the nipple in the cup-shaped 'body'a cap for closing the cup-shaped body, said* cupshaped body being provided'with an opening i leading through the side thereof immediately adjacent the bottom thereof.

In testimony whereof VWe aix our signa- WILLIAM` GROSBERG. GEORGE. SURPRENANT. 

